Circuit Boards Location - Sony HCD-F250AV Service Manual

6-4. CIRCUIT BOARDS LOCATION

TRANS board
PANEL board
SW/POWER board
HP/MIC board
DOOR LED board
CD MOTOR board
LEAF SW board
AUDIO board
CD LED board
TABLE SENSOR board
SURR board
AMPLIFIER board
FUNC board
CD DOOR board
DISC SENSOR (S) board
BU board
DOOR SW board
DISC SENSOR (R) board
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THIS NOTE IS COMMON FOR PRINTED WIRING
BOARDS AND SCHEMATIC DIAGRAMS.
(In addition to this necessary note is printed in each
block.)
For schematic diagrams.
Note:
• All capacitors are in µF unless otherwise noted. pF: µµF
50 WV or less are not indicated except for electrolytics
and tantalums.
• All resistors are in Ω and
specified.
• % : indicates tolerance.
• ¢ : internal component.
MAIN board • 2 : nonflammable resistor.
• 1 : fusible resistor.
• C : panel designation.
Note:
The components identi-
fied by mark ! or dotted
line with mark ! are criti-
cal for safety.
Replace only with part
number specified.
• U : B+ Line.
• V : B– Line.
• H : adjustment for repair.
• Voltages and waveforms are dc with respect to ground
under no-signal (detuned) conditions.
• Voltages are taken with a VOM (Input impedance 10 MΩ).
Voltage variations may be noted due to normal produc-
tion tolerances.
• Waveforms are taken with a oscilloscope.
• Circled numbers refer to waveforms.
• Signal path.
F
: FM
g : VIDEO/MD
E
: PB (DECK A)
d
: PB (DECK B)
G
: REC (DECK B)
J
: CD
c : CD DIGITAL
• Abbreviation
CND : Canadian
For printed wiring boards.
Note:
• X : parts extracted from the component side.
• ¢ : internal component.
• b : Pattern from the side which enables seeing.
1
/ W or less unless otherwise
4
Note:
Les composants identifiés par
une marque ! sont critiques
pour la sécurité.
Ne les remplacer que par une
piéce portant le numéro
spécifié.
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HCD-F250AV